The Boulder Group Mine is a gold and silver mine located in Boise county, Idaho at an elevation of 3,999 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 3,999 Feet (1,219 Meters)
Commodity: Gold, Silver
Lat, Long: 43.91833, -115.78694
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Boulder Group Mine MRDS details
Site Name
Primary: Boulder Group Mine
Commodity
Primary: Gold
Primary: Silver
Location
State: Idaho
County: Boise
District: Idaho City District
Land Status
Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: Boise National Forest
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Sawtooth Mountains
Mineral Deposit Model
Not available
Orebody
Form: LINEAR
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Oxidation; Fe And Mn Stains
Rocks
Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous
Name: Granite
Role: Associated
Age Type: Associated Rock
Age Young: Miocene
Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous
Analytical Data
Analytical Data: SAMPLE FROM 1 VEIN ASSAYED 0.55 OZ AU/TON AND 8.3 OZ AG/TON. (WESTERN END OF PROPERTY)
Materials
Gangue: Quartz
Comments
Comment (Geology): THE APLITE DIKES HAVE ABOUT THE SAME ORIENTATION AS THE VEINS
Comment (Location): AT THE END OF THE ROAD ON ELK CRK.
Comment (Commodity): ELEVEN QUARTZ CLAIMS AND ONE MILL SITE
Comment (Production): DEPOSITS AT EAST END OF PROPERTY PRINCIPALLY FREE - MILLING AU. WITH SOME AG.
Comment (Development): THOUGHT TO BE THE WESTWARD CONTINUATION OF THE WASHINGTON AND SUBROSA VEINS
References
Reference (Deposit): BALLARD, SAMUEL M., 1924, GEOLOGY AND GOLD RESOURCES OF BOISE BASIN,BOISE CO., IDAHO: IDAHO BUREAU OF MINES & GEOL. BULL. 9, P. 97.
Reference (Deposit): ANDERSON, A.L., 1947, GEOLOGY AND ORE DEPOSITS OF BOISE BASIN, IDAHO: USGS BULL. 944-C, P. 236-237.
Reference (Deposit): 1924 GEOLMAP IDAHO BUR MINES, BULL. 9
Reference (Deposit): 1947 GEOLMAP ANDERSON, A.L., BULL. 944-C
Reference (Production): BALLARD, 1924, IDAHO BUREAU OF MINES BULL. NO. 9, P. 98
Idaho Gold
"Where to Find Gold in Idaho" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Idaho. Read more: Where to Find Gold in Idaho.
